https://**********veracode.com/s/question/0D5Uf00000I2CjLKAV/faqsexpertguide-888-829-1467-know-all-about-united-cancellation-policy
If you cancel your flight, you can ask to have your award miles put back into your account with no fee. Depending on the situation, you have options for how to redeposit your miles: For a reservation, use the My Trips section on united.com or the United app. You can also call us to speak to a representative.